How are the foreigner and the poor to be treated, according to the Bible? Here are a few texts from the Hebrew Bible and the gospels:

Deuteronomy 10:19:

You shall also love the stranger, for you were strangers in the land of Egypt.

Leviticus 19:34:

The alien who resides with you shall be to you as the citizen among you; you shall love the alien as yourself …

The scene of the last judgment in Matthew 25:31-40:

When the Son of Man comes in his glory, and all the angels with him, then he will sit on the throne of his glory.[ ….] Then the king will say to those at his right hand, “Come, you that are blessed by my Father, inherit the kingdom prepared for you from the foundation of the world; for I was hungry and you gave me food, I was thirsty and you gave me something to drink, I was a stranger and you welcomed me, I was naked and you gave me clothing, I was sick and you took care of me, I was in prison and you visited me.” Then the righteous will answer him, “Lord, when was it that we saw you hungry and gave you food, or thirsty and gave you something to drink? And when was it that we saw you a stranger and welcomed you, or naked and gave you clothing? And when was it that we saw you sick or in prison and visited you?” And the king will answer them, “Truly I tell you, just as you did it to one of the least of these who are members of my family, you did it to me.”

The story of the chasm between Lazarus and the rich man in Luke 16:19–31:

There was a rich man who was dressed in purple and fine linen and who feasted sumptuously every day. And at his gate lay a poor man named Lazarus, covered with sores, who longed to satisfy his hunger with what fell from the rich man’s table; even the dogs would come and lick his sores. The poor man died and was carried away by the angels to be with Abraham. The rich man also died and was buried….

I end this partial list with the story of the Samaritan in Luke 10. It infinitely expands the command of love of neighbor in Leviticus 19:18 by binding it to the central command of love of the divinity in Deuteronomy 6:4–5. The Samaritan of the story is on Judaean territory. He himself belongs to a reviled group and  is in potential danger. When he comes upon the victim on the side of the road, he is the one who comes to the help of that near-dead person. He does not put his own security above everything else as the priest or levite do. Luke 10:25–37:

Just then a lawyer stood up to test Jesus. ‘Teacher,’ he said, ‘what must I do to inherit eternal life?’ He said to him, ‘What is written in the law? What do you read there?’ He answered, ‘You shall love the Lord your God with all your heart, and with all your soul, and with all your strength, and with all your mind; and your neighbor as yourself.’ And he said to him, ‘You have given the right answer; do this, and you will live.’

But wanting to justify himself, he asked Jesus, ‘And who is my neighbor?’ Jesus replied, ‘A man was going down from Jerusalem to Jericho, and fell into the hands of robbers, who stripped him, beat him, and went away, leaving him half dead. Now by chance a priest was going down that road; and when he saw him, he passed by on the other side. So likewise a Levite, when he came to the place and saw him, passed by on the other side. But a Samaritan while travelling came near him; and when he saw him, he was moved with pity. He went to him and bandaged his wounds, having poured oil and wine on them. Then he put him on his own animal, brought him to an inn, and took care of him. The next day he took out two denarii, gave them to the innkeeper, and said, “Take care of him; and when I come back, I will repay you whatever more you spend.” Which of these three, do you think, was a neighbor to the man who fell into the hands of the robbers?’ He said, ‘The one who showed him mercy.’ Jesus said to him, ‘Go and do likewise.’